[tptacek]

I tip 20% because the math is easier.

I have found that if you're a regular at a restaurant or a bar, and you consistently tip 20%, you'll be remembered for it. It's a good thing.

Most of us wouldn't notice the difference between 15% and 20%, even at a Michelin-starred restaurant, by the time we're looking at our finances aggregated in Mint. My recommendation: just tip 20%. You'll be happier in the long run, and your servers will be too.

[liquidcool]

That's reasonable, but if we're talking easy math, I just add 25% to the base. Just divide by 4 and add that. Covers tax with about a 17-18% tip, and I usually round up. I also tip better to any server I see regularly, I agree that pays off.